Although I do all my film developing at home, I do all my enlarging at a local community darkroom, often working with 3-5 other people in the same workspace, using the same chemicals, etc. Having my own darkroom is impossible since I live in a tiny flat with no doors that shut properly, and because I move around a lot. As you can imagine, I'm having problems with dust and there isn't much I can do about it other than wiping down my workspace (and leaving it settle for a while before printing) when I use it. The worst is printing my 6x6 negs -- they, and the neg holder, attract a lot of dust that I can remove, but new dust finds it way onto the neg by the time I put it back into the enlarger (Durst). The other problem is dust within the lens that I use to print -- I can see those pesky little guys inside, there's no getting them out. So, rather than go crazy trying to make clean prints, I know that I'm just going to have to learn how to spot them. However, having had several bad spotting experiences in the past (probably just technique and too large a brush), I'd like to know what people currently recommend for spotting both RC and FB papers. Dyes (diaphoto, marshall's, photospeed) or pens (tetenal)? Is there one that works well with both? I'd rather not have to buy products for both fiber and RC prints. For dyes, would a 00 brush work best? Is it necessary to get other sizes?